RG-218/U is probably best known by its original designator: RG-17/U
When I first built my station I used thousands of feet of RG-17 and RG-218, I
have only 500 feet in use now. I've been trying to give my used RG-218/U and
RG-17/U away, so far there have been only tire-kickers and no takers!
A variety of connectors are available for RG-218, all of them are expensive.
Most of mine are type HN connectors, I still use silver plated HN connectors
extensively in my station. I also have a large quantity of high power LC
connectors for RG-218, but these are expensive to adapt to!
W3GRF gave me my first RG-218 back in the early 1970s. He always soldered and
waterproofed pigtails of RG-213 directly onto the RG-218 with no connectors. I
think its a good idea given the high cost of connectors. As Lenny often said,
"the DX will never know the difference."
RG-218 uses solid dielectric, so its much heavier per foot than modern foam
There is a common problem with RG-218 or RG-17 if you hang it vertically on a
tower: the dielectric and center conductor tend to slowly creep inside the
shield! This makes connectors unreliable...
---- Original message ----
>Date: Fri, 30 Oct 2009 10:53:56 -0700
>From: "Jim Brown" <firstname.lastname@example.org>
>Subject: [TowerTalk] RG218
>To: "Tower Talk List" <email@example.com>
>I have the opportunity to buy some RG218 made by Times. Can anyone
>tell me about this cable? I know it's 50 ohms, 7/8-inch, PVC-II
>jacket, and 0.9dB/100 ft at 100 MHz.
>Is anyone using this stuff? What do you do for connectors?
>TowerTalk mailing list
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